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EA460 Self Excited Automatic Voltage Regulator 120V or 240V Compatible with Newage* Stamford SX460 regulator Sensing Input Voltage Voltage regulation < +/- 1% Soft start voltage ramping Sensing voltage loss protection Frequency 120 or 240 Vac sensing, jumper selectable Under frequency roll off protection Output Voltage Current With under frequency LED indicator Resistance *All manufacturer names, numbers, symbols and descriptions are used for reference purpose only and do not imply that any part is the product of these manufacturer. Specifications Sensing Input Voltage 120 (95-132) or 240 (190-264) Vac 1 phase 2 wire jumper selectable Output 9. Turn the stability potentiometer clockwise until instability is shown, and then turn it anticlockwise slightly still both meter mention in (5) and (6) shown stable. 1. SPECIFICATION Features External Volts Adjustment +/- 7% with 1K ohm 1 watt trimmer Unit Power Dissipation Max. 10 watts Frequency 50 / 60 Hz jumper selectable Soft Start Ramp Time Voltage Max. 90 Vdc at 207 Vac input Under Frequency Protection Current Continuous 4A Set Point 95% Hz (Factory Knee Point Setting) Intermittent 10A for 10 sec. Slope 170% down to 30 Hz Resistance Min. 15 ohms Environment 2 sec. < +/- 1% (with 4% engine governing) Storage Temperature -40 - +85 °C Build Up Voltage Residual volts at AVR terminal > 5 Vac Relative Humidity Max. 95% Thermal Drift 0.05% per °C change in AVR ambient Vibration 3.3Gs @ 100-2K Hz 45.0 20.0 Under Frequency Protection Set point 95% Hz Max. 90 VDC @ 207 VAC Continuous 4A Intermittent 6A for 10 sec. Min. 15 ohm 4. ADJUSTMENTS ( UFRO ) Slope 170% down to 30 Hz Voltage Regulation < ± 1.5% ( with 4% engine governing ) Soft Start Ramp Time 2 sec. Voltage Build-up Residual voltage at AVR terminal > 5 VAC Dimensions 135mm L * 100mm W * 49mm H Thermal Drift 0.05% per °C change in AVR ambient Weight 243g ± 2% ● As using 50Hz, please connect a jumper between Com and 50Hz. As 60Hz, between Com and 60 Hz. 2. When operations, please do not touch the warning signal of the heat sink. 1. Connect F1, F2 to DC output port. 2. Connect the sensing port at 7, 8 (the factory setup is 220V, if 110V is required, please join 3, 4) VOLT Voltage adjustment STAB Stability adjustment UFRO Setting under frequency protection knee point 3. External voltage regulator is as Figure 4. 4. Connect a jumper from COM to the 50Hz terminal for 50Hz operation. Note : Dimensions 135.0 (L) x 100.0 (W) x 45.0 (H) mm Weight 243 g +/- 2% Please install 5A 250V fuse at power input port as Figure 4. 135.0 114.0 Physical Specification 3. NOTICE OF USE UFRO LED STAB 5.4 1. Ensure all the wire of the regulator are correctly connected and the proper fuse (5A250V) is installed. 2. Turn voltage potentiometer full anticlockwise ( lowest voltage level). 3. If used, turn external voltage potentiometer to the middle position. full 5. Connect a 110VDC meter across the field with proper polarity. 1. The connection and examination procedures must be executed by the profession engineers. 6. Connect a 300VAC meter across line to neutral of generator. 2. Place the EA460 inside of the generator, especially the moisture-proof and anticorrosive space. 3.2 Startup Procedure 7. Start and run the generator at no load and rated speed. The generator output voltage should build up to a minimum level if the voltage does not build up, It may cause by low residual voltage of generator. Refer to field flashing section in generator manual. 1. The surface temperature pf the EA460 will be over 60 °C. 8. Slowly adjust voltage potentiometer until the generator voltage reach the proper value. High Temperature UNITS : mm Wiring and adjustment Figure 4 60HZ 40 20 0 10 20 30 40 50 60 1. When there is no connection to VR, 1 and 2 must be joined. 2. When LED lamp is light on, it means the frequency isn’t enough ,The output voltage will decrease to prevent over load exciting current to damage the exciter field winding. 80 6. TROUBLE SHOOTING 60 SYMPTOM 40 Voltage does not build up 11 50HZ 60 ( (% % OF OFMONINAL) NOMINAL) GENERATOR OUTPUT VOLTAGE 80 11 ((% % OF OF MONINAL) NOMINAL) GENERATOR OUTPUT VOLTAGE Note : 100 20 0 1 FREQUENCY (HZ) SOFT START (V/Sec) Frequency Compensation Curves Figure 2 Soft Start Curve Figure 3 2 CAUSE Out voltage high Out voltage instable CORRECTION Residual voltage below 5VAC Flash generator field with proper method Incorrect wiring Check wiring diagram for proper connection Power/sensing or field wires not connected Connect the wires properly Generator not up to speed Out voltage low Increase generator speed Poor adjustment is made Read start procedure carefully and adjust again Frequency roll-off Increase generator speed Incorrect voltage selection Read user’s manual to select correct voltage Poor adjustment is made Read start procedure carefully and adjust again Incorrect voltage selection Read user’s manual to select correct voltage Poor adjustment is made Read start procedure carefully and adjust again Field voltage requirement lower the rang of regulator Inquire our distributor to solve Use only original supplied spare protection fuse for fuse replacement. Please accept our sincere apology if any modification in performance, specification or appearance is made without prior notice. ______________________________________________________________________________________ ______________________________________________________________________________________ 4 EA460 EA460 4.2 Voltage Adjustment WARNING Overly field flashing may damage the AVR or generator excitation winding. Please make sure you have read and understand the contents of the instruction manual prior to installation. Incorrect wiring connection may result in irreversible damage to the product and other equipments. 2. If used, a 1000 ~ 1500Ω 1/2 watt potential meter may be connected to terminals VR and VR, refer to Figure 4. 4.3 Stability Adjustment 1. Adjust the front panel STAB control the system stable. Rotation of the front panel STAB control in the counter-clockwise (CCW) direction will speed response time. If rotated too for CCW, the generator voltage my oscillate (hunt). 2. Rotated the front panel STAB control CCW until the system start oscillating and then rotate cw just past the point where oscillation occurred. 5. FIELD FLASHING When the regulator is operated with the generator for the first time, the polarity of residual magnetism may be reversed or too small to achieve the necessary build-up voltage for the regulator. If reversing the field connections does not induce build-up, and the residual voltage is less than the specified value of 5 VAC, shut down the Prime-mover and proceed with the following steps : EA460 STAB 120 3. Adjust the front panel U/F control until the output voltage low about 5V than nominal voltage. ( For 50Hz applications, the frequency “Roll-off” is factory preset to 45Hz, for 60Hz operation, the frequency is 55Hz). ______________________________________________________________________________________ EA460 2. All voltage readings are to be taken with an average-reading voltmeter Meggers and high-potential test equipment must not be used. Use of such equipment could damage the AVR. 100 4. If residual voltage is greater than 5VAC, but AVR still unable to build up voltage, please replace with another AVR. 2 ATTENTION 120 3. Disconnect the AVR AC power input terminals and restart the generator, re-measure the residual voltage. If this voltage is greater than 5VAC, reconnect voltage regulator, and voltage build-up should be successful. If measured less than 5VAC, repeat steps 1 and 2. ______________________________________________________________________________________ 1. AVR can be mounted directly on the engine, genset, switchgear, control panel, or any position that will not affects operation. For dimension reference, please see Figure 1. LED clockwise 3.1 See Figure 1 VOLT UFRO 2. Allow approximately 3 seconds before removing the DC source. 1. Adjust the front panel VOLT to vary the generator nominal voltage. 3.3 System Startup 4. Turn stability potentiometer (highest stability level). 1. With the Prime-mover at rest and the regulator’s field output wires disconnected, apply a DC source ( NOT grounded ) of no more than 3~12 VDC with Positive to F+ and Negative to F-, in series with a current-limiting resistor of 3~5 ohms 20 watt. (The set battery is a suitable source.) 1. Startup engine and build voltage. 2. Adjust the engine speedy down to low frequency. VOLT Outline Drawing Figure 1 4.1 Frequency Roll-off Adjustment ● To reset the frequency roll-off, proceed as follow : 2. WIRING (Refer to Figure 4) AVR Control Function 100.0 80.0 10.Interrupt regulator power for a short time (approximately 1 to 2 second). If the voltage still stable, the adjustment is now completed. Otherwise increase the stability slightly, repeat procedure (10) until stability is reached. Unit Power Dissipation Max. 10 watt Operation Temperature -40 - +70 °C Volts Regulation Mechanical Specifications External Volts Adjustment ±7% with 1K ohm 1 watt trimmer 95 ~ 132 VAC or 190 ~ 264 VAC 1 phase, jumper selectable 50 / 60 Hz, selectable 5 3